No, speed tests don't tell you have powerful the hardware is. And you're saying I'm the one talking nonsense? The XBO is faster than the PS4 in speed tests, but that's not because it's more powerful. It has to do with software. Not hardware. The Galaxy S6 is factually more powerful than and Iphone 6S plus. It simply has more powerful hardware.
So which applications can show the more powerful hardware of the S6? Which demanding games or applications run smoother on an Galaxy S6 than on an iPhone 6 or 6S?